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Finding the Fourth Proportional to 27,888.66, 38,472.84 and 18,465.12

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Solution

The fourth proportional to 27,888.66, 38,472.84 and 18,465.12 is: 25,472.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.66 : 38,472.84 = 18,465.12 : x
  2. Step 2: Convert to fraction form
    27,888.66/38,472.84 = 18,465.12/x
  3. Step 3: Cross multiply
    27,888.66x = 38,472.84 × 18,465.12
  4. Step 4: Simplify right side
    27,888.66x = 710,405,607.34
  5. Step 5: Solve for x
    x = 710,405,607.34/27,888.66
  6. Step 6: Final answer
    x = 25,472.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.